If you signed a promissory note, the difference between co-maker and endorser liability on a promissory note comes down to timing and conditions. A co-maker owes the full debt from the moment of signing, on the same terms as the borrower. An endorser owes nothing unless the borrower fails to pay and the holder of the note takes specific procedural steps first. The Uniform Commercial Code, adopted in some form by every state, sets the default rules for both roles.
What a Co-Maker Owes, and When
A co-maker is primarily liable. Under UCC § 3-412, a maker must pay the note according to its terms at the time it was issued, with no conditions and no requirement that anyone else default first.1Cornell Law Institute. Uniform Commercial Code 3-412 – Obligation of Issuer of Note or Cashier’s Check Your liability begins the day you sign.
When two or more people sign as co-makers, each is jointly and severally liable under UCC § 3-116.2Cornell Law School. Uniform Commercial Code 3-116 – Joint and Several Liability; Contribution In practice, the creditor can collect the entire balance from any single co-maker rather than splitting it proportionally. Co-sign a $50,000 note and the other signer disappears, and the lender can sue you alone for the full $50,000 plus interest. It does not matter that you never personally received the loan proceeds. Your signature made the full amount your responsibility.
A co-maker’s obligation also survives death. If a co-maker dies, the estate generally remains liable, and any surviving co-maker still owes the full amount.
What an Endorser Owes, and When
An endorser makes a conditional promise. Under UCC § 3-415, the endorser must cover the debt only if the primary maker fails to pay and the holder follows specific procedural steps.3Cornell Law School. Uniform Commercial Code 3-415 – Obligation of Indorser Until those conditions are met, the endorser owes nothing. If the maker pays as agreed, the endorser is never called upon.
Before the endorser’s liability activates, the holder has to present the note to the maker for payment. Only if the maker then fails to pay — a step called dishonor — does the endorser become responsible. Once that happens, the endorser is fully liable for the unpaid balance.
An endorser can eliminate liability entirely by adding the words “without recourse” next to the signature. Under UCC § 3-415(b), a “without recourse” endorsement means the endorser has no obligation to pay the note even if the maker defaults.3Cornell Law School. Uniform Commercial Code 3-415 – Obligation of Indorser This is common when a note is transferred between parties who want to pass along the instrument without taking on personal risk.
How Signature Placement Decides Which Role You Signed Into
When there is a dispute about whether someone signed as a co-maker or an endorser, courts look first at where the signature sits on the note and at any accompanying language. Under UCC § 3-204, a signature is treated as an endorsement unless the surrounding words, the terms of the note, the placement of the signature, or other circumstances make clear that the signer had a different purpose. Where the purpose is ambiguous, the default presumption is endorser — the role with less immediate liability.
The general rules courts apply:
- A signature on the face of the note (typically bottom right) is almost always read as a maker or co-maker, meaning primary liability from the outset.
- Signatures on the back of the note or in the margins are classified as endorsements, meaning secondary liability.
- A signature followed by “guarantor” or “surety” indicates an accommodation party, generally with secondary liability, though a payment guarantor may be liable on the same terms as the maker.4Cornell Law School. Uniform Commercial Code 3-419 – Instruments Signed for Accommodation
- A signature with “without recourse” eliminates the endorser’s obligation to pay.3Cornell Law School. Uniform Commercial Code 3-415 – Obligation of Indorser
- A signature marked “witness” indicates the person did not intend to become a party to the debt, which may avoid liability entirely.
Before signing any promissory note, look at where you are being asked to sign and at any language printed near the signature line. Those details, not any verbal understanding you have with the borrower, will control your legal exposure.
If You Signed for Someone Else’s Benefit
Many people sign a promissory note not because they received the loan proceeds, but because they agreed to back someone else’s debt. The UCC calls this person an accommodation party. Under § 3-419, an accommodation party signs for the purpose of taking on liability without being a direct beneficiary of the money lent.4Cornell Law School. Uniform Commercial Code 3-419 – Instruments Signed for Accommodation
The critical detail is that an accommodation party can sign in any capacity, and is held to whatever level of liability that capacity carries. Sign as an accommodation co-maker, and you have the same primary liability as the borrower. Sign as an accommodation endorser, and your liability is secondary and conditional. The role you occupy on the note, not the fact that you did someone a favor, determines how and when the creditor can collect from you. A signature by someone who is not the holder — an anomalous endorsement under UCC § 3-205 — is presumed to be an accommodation.5LII / Legal Information Institute. Uniform Commercial Code 3-205 – Special Indorsement; Blank Indorsement; Anomalous Indorsement
Accommodation parties do have one right ordinary co-makers lack. If you pay the debt, you are entitled to full reimbursement from the person you accommodated and can enforce the note against them directly.4Cornell Law School. Uniform Commercial Code 3-419 – Instruments Signed for Accommodation
Notice of Dishonor and the Waivers That Cancel It
Before a creditor can hold an endorser liable, the creditor must give a formal notice of dishonor under UCC § 3-503. This notice tells the endorser that the maker failed to pay and that the holder is now looking to the endorser for the money.6Cornell Law School. Uniform Commercial Code 3-503 – Notice of Dishonor Notice can be oral, written, or electronic, as long as it identifies the note and indicates it was not paid.
The deadline depends on who is giving notice. A collecting bank must send notice before midnight of the next banking day after learning of the dishonor. Everyone else, including individual holders and non-bank creditors, has 30 days from the dishonor. Missing these deadlines can completely discharge the endorser’s obligation to pay.
Co-makers get none of these procedural protections. Because their liability is primary, a creditor can file suit against a co-maker immediately after a missed payment. No notice required, no waiting period, no chance to cure the default before legal action begins.
Watch for waivers. Many promissory notes include boilerplate in which all signers waive their rights to presentment, notice of dishonor, or both. Under UCC § 3-504, when the terms of the note say presentment or notice of dishonor is not necessary, or when the endorser has personally waived those rights, the creditor can skip these steps.7Legal Information Institute. Uniform Commercial Code 3-504 – Excused Presentment and Notice of Dishonor A waiver of presentment automatically counts as a waiver of notice of dishonor as well. If you signed a note with this kind of waiver, you lose the timing protections above, and the creditor can pursue you on the same fast track available against a co-maker.
When a Secondary Party Gets Discharged
Even after you have taken on liability as an endorser or accommodation party, certain actions by the creditor can release you from the debt, in whole or in part.
Loan Modifications Without Consent
Under UCC § 3-605, if the creditor extends the due date or modifies the payment terms for the primary borrower without the secondary party’s agreement, the secondary party is discharged to the extent the change causes a financial loss.8Cornell Law School. Uniform Commercial Code 3-605 – Discharge of Secondary Obligors If a lender grants the borrower a two-year extension and interest accrues during that time, an endorser who never agreed to the extension may be released from the additional interest that built up.
This protection disappears if you consented to the modification, or if the note contains a general waiver of defenses based on suretyship. Many commercial promissory notes include exactly that kind of waiver, so read the fine print before assuming you are protected.8Cornell Law School. Uniform Commercial Code 3-605 – Discharge of Secondary Obligors
Impairment of Collateral
If the note is secured by collateral, such as a vehicle or real property, and the creditor damages, releases, or fails to properly maintain its interest in that collateral, a secondary party may be discharged to the extent the collateral’s value was diminished. Actions that qualify as impairment include releasing collateral without substituting something of equal value, failing to properly record a security interest, and failing to comply with the law when selling repossessed property. The secondary party has the burden of proving the impairment and the amount of loss.
If You End Up Paying, What You Can Recover
The law gives signers who pay more than their share a path to recover from the others.
- Between co-makers, UCC § 3-116(b) entitles a co-maker who pays the full debt to contribution from the other co-makers in proportion to their shares. If two co-makers each owe half and you pay the entire $50,000, you can sue the other co-maker for $25,000.2Cornell Law School. Uniform Commercial Code 3-116 – Joint and Several Liability; Contribution
- An accommodation party who pays the note can seek full reimbursement from the person accommodated, not just a proportional share, and can enforce the note directly against the borrower.4Cornell Law School. Uniform Commercial Code 3-419 – Instruments Signed for Accommodation
These rights exist by default under the UCC, but the note or a separate agreement can modify or eliminate them. Check the language before you rely on them.
Defenses Either Role Can Raise
Both co-makers and endorsers can raise defenses if the holder tries to enforce the note. UCC § 3-305 lists the defenses that work even against a holder in due course, meaning someone who took the note in good faith, for value, and without knowledge of problems:9Cornell Law School. Uniform Commercial Code 3-305 – Defenses and Claims in Recoupment
- Minority, if the signer was under the legal age for contracts.
- Duress or lack of legal capacity, if you were coerced into signing or lacked the mental capacity to understand the transaction.
- Illegality of the underlying transaction.
- Fraud in the execution, if someone tricked you into signing a document without any real opportunity to know it was a promissory note or to learn its key terms.
- Discharge in bankruptcy.
Against a holder who is not a holder in due course, additional defenses are available, including ordinary breach-of-contract claims and fraud in the inducement (where you knew you were signing a note but were lied to about the deal). The distinction matters because a holder in due course takes the note largely free of these lesser defenses.
How Long the Creditor Has to Sue
A creditor does not have unlimited time. Under UCC § 3-118, the deadline depends on the type of note:10Legal Information Institute. Uniform Commercial Code 3-118 – Statute of Limitations
- On a note with a fixed due date, the holder has six years from the due date to file suit, or from the accelerated due date if the lender exercised an acceleration clause.
- On a demand note with no fixed due date, if the holder demands payment, the six-year clock starts from the demand. If no demand is ever made, the note becomes unenforceable after ten continuous years with no payments of principal or interest.
These are the default UCC periods. Some states have adopted shorter or longer timeframes, so the deadline in your jurisdiction may differ. Once the limitations period expires, neither a co-maker nor an endorser can be forced to pay through a lawsuit, though the debt itself does not disappear.